LCM of 605, 205, 615, 921
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 605, 205, 615, 921 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 605, 205, 615, 921. So, keep reading to learn more.
Given numbers are 605,205,615,921
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 605,205,615,921 is 22845405.
Find LCM of 605,205,615,921 with Prime Factorization
| 3 | 605, 205, 615, 921 |
| 5 | 605, 205, 205, 307 |
| 41 | 121, 41, 41, 307 |
| 121, 1, 1, 307 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 41 x 121 x 1 x 1 x 307 = 22845405
Therefore, the lowest common multiple of 605,205,615,921 is 22845405.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
605 x 205 x 615 x 921 = 70249620375
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
605 : 1, 5, 11, 55, 121, 605
205 : 1, 5, 41, 205
615 : 1, 3, 5, 15, 41, 123, 205, 615
921 : 1, 3, 307, 921
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 605,205,615,921, is 1.
Now, the common factors can be found like this.
605:5x 11x 11
205:5x 41
615:3x 5x 41
921:3x 307
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 5x 5x 41 = 3075
Therefore, the value for common factors is 3075.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 70249620375/(1x3075)
LCM = 70249620375/3075
LCM = 22845405
Thus, we can understand that the LCM of 605,205,615,921 is 22845405.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 605, 205, 615, 921
1. What is the LCM of 605, 205, 615, 921?
Answer: LCM of 605, 205, 615, 921 is 22845405.
2. How to calculate the LCM of 605, 205, 615, 921?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 605, 205, 615, 921.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.